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Date: Thu, 22 Oct 2015 18:18:41 +0200
From: "Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] A lesson from gnet-makefile
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> On Thu, Oct 22, 2015 at 10:18 AM, Nicklas Karlsson
> (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]
> <geda-user AT delorie DOT com> wrote:
> > On Thu, 22 Oct 2015 09:16:10 -0400
> > "Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> wrote:
> >
> >> On Thu, Oct 22, 2015 at 6:19 AM, Kai-Martin Knaak <kmk AT familieknaak DOT de> wrote:
> >> > Nicklas Karlsson  wrote:
> >> >
> >> >> Yes, only problem with star ground symbol in gschem is how many pins
> >> >> it should have. In pcb for many cases it would make sense with one
> >> >> common connection point.
> >> >>
> >> > Last time this topic surfaced on the mailing list the most practical
> >> > suggestion was to exploit a pecularity of text in copper:
> >> > The connection check of geda-pcb completely ignores letters. Insert a
> >> > large "-" and make regular tracks overlap with the character but not
> >> > connect to each other.
> >>
> >> That is a scary bug.
> >
> > According to my oppinion ideally DRC should look on copper layer not which symbol it belong to. If it look on nets only I guess it could more or less temporary assign some net to all copper objects.
> 
> I think you are imagining something that works a little differently
> from the way PCB handles this but I could be wrong.

Probably becuase I have not read the code but some algorithm is used calculate distance between objects. If this algorithm look on traces, polygons and pads it will miss other copper objects. Ohms law however only care about copper.

Nicklas Karlsson